Link.



,151. PATENTED SEPT. 17, 1907.

A, H. MYAORONALD.

LINK. APPLICATION FILED APR. 30.1907.

u h/M00000 UNITED STATES PATENT OFFICE.

ADELBERT HOWARD MACRONALD, OF PORTLAND, MAINE, ASSIGNOR TO THOMAS LAUGH-.

LIN GOlllPilNY, OF PORTLAND, MAINE, A GORPOPtrlf-TION OF MAINE.

LINK.

Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed April 30,1907. Serial No. 871,176.

To all whom it may conccrn:

ie it known that I, ADELBERT HOWARD hLlACRONALI), a citizen of the United States, residing at Portland, in the county ofpCuinberland State of Maine, have invented certain new and useful Improvements in Links, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in links, and more particularly to that type of link illustratedin the Thompson patent No. 193,295, and the Laughlin patent No. 774,189.

The type of link referred to consists generally of two 1 spreading, these last mentioned-interlocking projections being suggested by the Laughlin patent referred to, as an improvement upon the earlier Thompson link.

While the Laughlin link above mentioned has proved a decided advance in the art and possesses all of the merits claimed in its behalf, I have found by eirpe members.

A convenient embodiment of the invention embraces a sectional link having overlapping split end portions thinned at the extremities, said extremities being apertured-andhaving bosses projecting inwardly therefrom around the apertures to fit into complementary seats in the opposite member of the link, said last mentioned member also having lugs projecting outwardly from said seats and said thin extremities.

The details in the construction and arrangement of parts will be apparent from the detailed description hereinafter contained, when read in connection with the accompanying drawing forming part hereof, and wherein said convenient embodiment of the invention is illustrated.

In the drawing: Figure 1 is a' perspective view of the link. Fig. 2 is an elevation of one of the link members,

fitting into the apertures of indicated by dotted lines in Fig. 1, and Fig. 5 is a detail section.

Referring more specific-ally to the drawings wherein like reference characters refer to corresponding parts in the several views, A A represent the two members of the link, they being of substantially C-shape and of like formation and contour, whereby either may be inverted and superposed upon the other to lorm a completed link oi approximately uniform thickness throughout. Each of these C-shaped members is provided with a solid connecting portion B and beveled or tapering ends leading from said connecting portion and grad ually decreasing in thickness-to the extremities thereof, which extremities, as best seen in Figs. 3 and 4, are very thin as compared to the thickness of the remaining portions of the link member. The opposing suriaces of the tapering ends of the link members are.

formed with interlocking projections D, the abutting walls of which are substantially at right angles to the axis of the link to prevent the ends irom spreading. The extremities of the ends are aperturcd as at E for the reception of lugs F disposed near the solid connecting portions B of the link members, whoreby to interlo'ck with the extreme ends hf said members.

To reinforce and strengthen the thin apertured ex tremities heretofore referred 'to, said extremities are formed on their inner surfaces with enlargements orbosses G arranged tolit into and snugly engage complementary recesses H in the opposite member of the link, which saidrecesses surround'the lugs F.

From the foregoing description, it will be apparent that a link made in keeping with the present invention "will be in general characteristics the same and possess all of the advantages of the standard split link. while having the additional advantage incident to the substantial strengthening of the only existing relatively weak portions of the link.

I claim I A link consisting of separate members having overlapping portions,- said overlapping portions being aperturecl and provided with lugs fitting said apertures whereby to interlock the members, the lugs being surrounded by recessed portions. and the apertures by bosses fittingsaid recesses.

In testimony whereof I allix my signature in presence of two witnesses.

ADELBERT HOVARD )IACRONALD.

Witnesses:

Ronnnr T. LAUGHLIN, WM. hICBRIDEl 

